Three-dimensional tooth profile design method of harmonic drive considering the deformation difference of the flexspline
ISSN: 0264-4401
Article publication date: 17 February 2021
Issue publication date: 17 August 2021
Abstract
Purpose
This paper aims to improve the meshing effect of the gear teeth. It is recommended to analyze the deformation difference between the inner and outer surfaces of the flexspline. The purpose of this paper is to modify the profile of the flexspline based on the deformation difference to improve the transmission accuracy and operating life of the harmonic drive.
Design/methodology/approach
In this paper, ring theory is used to calculate the deformation difference of the inner and outer surfaces of the flexspline, and the actual tooth profile of the flexspline is corrected based on the deformation difference. Then, the flexspline is divided into multiple sections along the axial direction, so that the three-dimensional tooth profile of the flexspline is modified to improve the gear tooth meshing effect.
Findings
This paper proves the effect of the deformation difference between the inner and outer surfaces of the flexspline on the tooth backlash, which affects the transmission accuracy and life of the harmonic drive. It is recommended to modify the tooth profile of the flexspline based on the deformation difference, so as to ensure the tooth meshing effect.
Originality/value
This paper provides a new way for the optimization of the three-dimensional tooth profile design of the harmonic drive.
Keywords
Acknowledgements
This work is supported by the National Natural Science Foundation of China (Grant No.51875445); Natural Science Basic Research Plan in Shaanxi Province of China (Grant No. 2017ZDJC-21).
Citation
Li, Y., Zhang, Y., Zhang, N. and Xu, B. (2021), "Three-dimensional tooth profile design method of harmonic drive considering the deformation difference of the flexspline", Engineering Computations, Vol. 38 No. 8, pp. 3351-3367. https://doi.org/10.1108/EC-06-2019-0266
Publisher
:Emerald Publishing Limited
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